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Gulf Intracoastal Waterway Tributaries

Offats Bayou Channel

Offats Bayou Channel        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 East Wye/West Wye 0+00 to 24+32.53 03/25/25 Survey Map XYZ
2 West Wye/West Wye 5+46.34 to 24+32.53 03/25/25 Survey Map XYZ
3-5 Offats Bayou Channel 24+32.53 to 140+00 03/25/25 Survey Map XYZ
           

Channel to Port Bolivar


Channel to Port Bolivar        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 Entrance Channel 0+00 to 64+51.33 03/25/25 Survey Map XYZ
2 North Ferry Channel -4+74.81 to 10+00 03/25/25 Survey Map XYZ
3 Central Ferry Channel -4+12.5 to 13+33.54   Survey Map XYZ
4 South Ferry Channel -3+94.17 to 29+02.67   Survey Map XYZ
           

Chocolate Bayou Channel

Chocolate Bayou Channel        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 East Wye 0+000 to 36+79.72 06/16/25 Survey Map XYZ
2 West Wye 0+000 to 36+79.72 06/16/25 Survey Map XYZ
3-6 Bay Channel 36+79.72 to 290+00 03/31/25; 06/16/25 Survey Map XYZ
7-9 Land Cut 290+00 to 434+29.46 03/31/25; 06/16/25 Survey Map XYZ
           

San Bernard River Channel

San Bernard River Channel        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 Mile 0 to Mile 0.5 0+00 to 26+00 07/17/24; 08/04/2025 Survey Map XYZ
2-3 Mile 0.5 to Mile 3.7 26+00 to 196+00 07/17/24 Survey Map XYZ
4-6 Mile 3.7 to Mile 8 196+00 to 420+00 07/18/24 Survey Map XYZ
7-14 Mile 8 to Mile 20.5 420+00 to 1080+00 05/20/22; 07/18,19/24 Survey Map XYZ
15-17 Mile 20.5 to Mile 25.2 1080+00 to 1330+00 07/18/24 Survey Map XYZ
18 Mile 25.2 to Mile 26 1330+00 to 1337+48.98 07/18/24 Survey Map XYZ
           

Channel to Palacios

Channel to Palacios        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1  East Wye 0+00 to 34+41.06 06/27/25 Survey Map XYZ
2 West Wye (-)3+59.31 to 34+41.06  06/27/25 Survey Map XYZ
3-9  Mile (GIWW) to Light 40 34+41.06 to  480+00 09/11/25 Survey Map XYZ
10-15  Light 40 to City Basin 480+00 to 798+00 05/06,16,21,27,29/25 Survey Map XYZ
16  City Basin 798+00 to 804+48 05/06/25 Survey Map XYZ
17  Entrance Channel to Municipal Basin 0+00 to 6+85.15 05/06/25 Survey Map XYZ
18  Municipal Basin 0+00 to 11+30 05/06/25 Survey Map XYZ
           

Mouth of the Colorado River via By-Pass Channel

Mouth of the Colorado River via By-Pass Channel      
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1-3 Mile 0 (Gulf) to Mile 1.4 -7+500 to 0+000 05/09/25 Survey Map XYZ
4-6 Mile 1.4 to Mile 3.9 0+000 to 13+357.88 04/24/25 Survey Map XYZ
7-8 Mile 3.9 to Mile 5.7 13+357.88 to 22+621.68 04/30/25 Survey Map XYZ
9-10 Mile 5.7 to Mile 8.36 (GIWW) 22+621.68 to 36+809.78 05/02/25 Survey Map XYZ
           

Colorado River Channel

Colorado River Channel        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1-2 Mile 0 to Mile 2 0+000 to 10+900 02/21/25; 07/18/25 Survey Map XYZ
3-8 Mile 2 to Mile 8 10+900 to 42+000 02/24/25 Survey Map XYZ
9-13 Mile 8 to Mile 13.5 42+000 to 71+000 02/25/25 Survey Map XYZ
14-15 Mile 13.5 to Mile 15.5 71+000 to 83+450.42 02/26/25; 08/15/25; 09/03/25 Survey Map XYZ
16 Turning Basin 83+450.42 to 84+251.03 02/26/25 Survey Map XYZ
           

Channel to Victoria and Channel to Seadrift

Channel to Seadrift        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 South Wye 0+00s to 30+00s 04/25/25 Survey Map XYZ
2 North Wye 0+00n to 30+00n 04/25/25 Survey Map XYZ
3 Connecting Channel to Seadrift 30+00 to 106+18 04/25/25 Survey Map XYZ
4 Seadrift Turning Basin 106+18 to 109+18.40 04/25/25 Survey Map XYZ
           
Channel to Victoria        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 Easterly Connecting Wye Channel 0+00 to 42+56 10/10,15/25 Survey Map XYZ
2 Westerly Connecting Wye Channel 0+04 to 42+56 10/07/25 Survey Map XYZ
3-13 Mile 0 (GIWW) to Mile 11 42+56 to 581+00 05/09/25; 10/28/25; 11/08,13/25 Survey Map XYZ
14-16 Mile 11 to Mile 14 581+00 to 740+00 04/30/25; 11/10/25 Survey Map XYZ
17-30 Mile 14 to Mile 29 740+00 to 1540+00 05/13/25 Survey Map XYZ
31-37 Mile 29 to Mile 34.7 1540+00 to 1837+46 05/12/25 Survey Map XYZ
38 Turning Basin 0+00 to 7+13.26 05/13/25 Survey Map XYZ
           

Alternate Route via Lydia Ann Channel

Alternate Route via Lydia Ann Channel        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1-6 Aransas Bay Light 49 to Light 83 1236+611 to 1278+523.11 04/15/25 Survey Map XYZ
7-9 Light 83 to Corpus Christi Ship Channel 1278+523.11 to 1298+920 10/06/25 Survey Map XYZ
           

Aransas Pass

ARANSAS PASS        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 - 5 Channel 0+00 to 324+42 04/08/25 Survey Map XYZ
6 Turning Basin 0+00 to 22+00 04/08/25 Survey Map XYZ
7 La Quinta Extension (San Patricio Basin) 22+00 to 29+00 04/08/25 Survey Map XYZ
8 Conn Brown Harbor 29+00 to 50+00 04/08/25 Survey Map XYZ
           

Channel to Port Aransas

Channel to Port Aransas        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 Approach Channel 2+00 to 8+88 04/09/25 Survey Map XYZ
2 Harbor Basin 8+88 to 14+27 04/09/25 Survey Map XYZ
3 Anchorage Basin 0+00 to 9+00 04/09/25 Survey Map XYZ
           

Channel to Port Mansfield

Channel to Port Mansfield        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1-2 Entrance Channel -4+000 to 0+000 10/22/25 Survey Map XYZ
3 Mile 0.7 to Mile 1.3 0+000 to 3+000 10/22/25 Survey Map XYZ
4-5 Mile 1.3 to Mile 3 3+000 to 12+000 11/03/25 Survey Map XYZ
6-8 Mile 3 to Mile 6 12+000 to 28+000 11/03/25 Survey Map XYZ
9-11 Mile 6 to Main Channel (GIWW) 28+000 to 45+036.15 11/05/25 Survey Map XYZ
12 North East Wye 41+256 ne to 44+014 ne 11/04/25 Survey Map XYZ
13 South East Wye 41+256 se to 43+994 se 11/04/25 Survey Map XYZ
14 North West Wye 0+023 nw to 2+980 nw 11/04/25 Survey Map XYZ
15 South West Wye 0+000 sw to 2+980 sw 11/04/25 Survey Map XYZ
16 Main Channel to Turning Basin 2+980 to 7+720 11/05/25 Survey Map XYZ
17 Turning Basin 7+720 to 9+550 11/05/25 Survey Map XYZ
18 Shrimp Basin 9+550 to 11+000 11/05/25 Survey Map XYZ
19 Small Craft Basin 0+000 to 1+496 04/02/25 Survey Map XYZ
           

Channel to Harlingen

Channel to Harlingen        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 North Wye 5+01n to 39+720n 09/15/25 Survey Map XYZ
2 South Wye 0+00 to 50+00 09/15/25 Survey Map XYZ
3-8 Mile 0 to Mile 8 50+00 to 420+00 04/04/25 Survey Map XYZ
9-17 Mile 8 to Mile 20 420+00 to 1060+00 04/09/25 Survey Map XYZ
18-21 Mile 20 to Mile 25.9 1060+00 to 1364+50 04/10/25; 07/23/25 Survey Map XYZ
22 Turning Basin 1364+50 to 1369+50 07/23/25 Survey Map XYZ
           

Port Isabel Small Boat Harbor

Port Isabel Small Boat Harbor        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 Entrance Channel 0+063 to 7+500 04/30/25 Survey Map XYZ
2 Harbor Basin 7+500 to 9+337 04/30/25 Survey Map XYZ
3 Basin 9+337 to 10+500 04/30/25 Survey Map XYZ
           
Port Isabel Side Channels        
PAGES CHANNEL Station to Station Survey Date(s) PDF Map  XYZ Data
1 60 Foot Channel 0+00 to 17+00 03/31/25 Survey Map XYZ
2 125 Foot Channel 17+00 to 54+75.9 03/31/25 Survey Map XYZ
3 125 Foot Channel South Leg 38+17.51 to 52+96 03/31/25 Survey Map XYZ